June 2018 Update

2018-06-22 20:57:24 +00:00 · 2018-06-22 20:57:24 +00:00 · 22f33d4004
commit 22f33d4004
parent ba8067c3b7
5278 changed files with 84726 additions and 14379 deletions
--- a/Task/Flatten-a-list/JavaScript/flatten-a-list-5.js
+++ b/Task/Flatten-a-list/JavaScript/flatten-a-list-5.js
@ -1,3 +1,2 @@
-let flatten = list => list.reduce(
-    (a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), []
-);
+// flatten :: Tree a -> [a]
+const flatten = t => Array.isArray(t) ? [].concat(...t.map(flatten)) : t;